<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="show.jsp" method="post">
<input type="number" name="shuju1">+<input type="number" name="shuju2"><input type="submit" value="=">

</form>

</body>
</html>